Curtain roller



May 8, 1928.

A. P. LANDRY CURTAIN ROLLER Filed March 1927 al u m '8 Patented May 8, 1928.

UNITED STATES Anvil: r. emmy, or YNN, MAssAonusE'r'rs CURTAIN ROL ER;

Application filed March 21, 1927. ser al 1%.. 176,911.

This invention relates to curtain rollers and has for'its object the production of a device of this character by which'the four-V For vthe purpose of illustrating the invention, one preferred form thereofis illustrated in the drawings, this form having been found to give satisfactory and reliable results, although it is to be understood that the various instrurneii t'al i'tie's of whichthe invention consists can be variously arranged and organized, and the invention is not limited to the precise armngement and organization of these instrumentalities as herein 1 the scope of the appended claims.

Of the drawings Figure 1- represents an elevation of acur' posits ends of said roller being' iiioilnt'ed in suitable supports. j v

Figure 2 represents tin elevation of one end of theroller.

inn device in elevation.

' 2 Figure 4represents an elevation offthe support having. the retardingmechanism mounted thereon. i

Figure 5 represents a section ofsame on line 5, 5 on Fig. 4.

Figure 6 r presents en elievation of the 7 formed fupon'fia cup-shaped member,

Figure 7 represents section of "same" on line 7, 7 on Fig. 6, and showing the right: r I H Extending through an, openingfiin the hand: support in elevation. V

Figure 8 repres ts an elevation of the the roller.

line 9, 9 on Fig. 7, and

Figure 10 represent an le' aticn of disk" througho'utthe several figures of the draw? i iwh n the eurtainlisinovedupwardly the pawl 27 will ride over the teeth f said "rstehetaudfthe curtain 19' will he rais d 7 lIIgS A shown and described iexcfept as required eral studsorlears 19 having notches-20 near tain mounted upon a roller embodying the 1 principles of thefpr'esent invent-iomthe. ope V V notched support for the right hand end oi Figure 9 represents a vertical section onv "In the drawingsdd is a the upper the lower end of the curtain has mounted therein'a'curt-ain stick 12. i Y e i This stick. 12 is preferably weighted to keep the curtain fiat and .tooverbalancethe tension of the curtain spri11g,onemeans of weightingthe stick being by forming openings13'ther'cin in which weights 14 may be disposed. j T i The particular means" used for weighting the stick 12 forms no part of the present invention. j r At one endof'the roller 11 andsec'ured tothc window: frame is asupport 15 having a p1ntle16 on which is revolublyniounted a. ratchet 17 provided atits inner end with aflange 18.' j on This ratchet 17 is cylindrical with its teeth on the end opposite the endof the v roller 11. v p e The support 15 is also provided with latagainst theperiphery of ratchet 1 7 and cansing sufficient friction to retard the rotation V t p of the ratchet 17about its-pintle 16. Figure 3 represents a se'tion of same on v line 3, 3 on Fig.2 and'showing the retard- Thetension of the spring 21 retains the, pro ections 22 "in the notches 20 and their accidental displacement.

0e Led e of the spring 21 contacts with the'face of the ,fiange' 18 and vprevents the displaeeinentofthe ratchet 17fr6ni .the pih- 1316 16; i i i i The ints-1 hasacentral socket 23 into prevents i which extendsv a cylindricalprojection 24 The pawl 26 is retainedin engagement with the ratchet Why a Spring 27 within'a cavity in the end of thefrolle'r l L' Whenlthelcurtain 10 is pulled downwardly the pawl 27 will engage the teeth oflthe ratchet 17 and cause it to rotate about the sweetie/ he "speed of rotationjof saidf ratchet being limited by the spring 21,"bi1tf g by forcing the rod 33 inwardly and this inj wardmovement of said rod will remove the :tionof the ratchet will be retarded to a certain degree so that the weight of the stick will not move the curtain down too far.

I In the opposite end of the roller 11 is a I deep socket 28 which is closed at its outer end by a ferrule 29 having disposed therein a disk 30 provided with a central opening or bearing 31 in which is positioned thereduced portion 32 of a rod 33 which is centrally disposed in the socket 28.

Along helical spring 34 surrounds the rod 33, undone end of this spring is secured to the end of they rod 33 while the opposite end of the spring is secured to the disk '30.

The spring 34 is so wound that it is adapted to rotate the roller 11 in a direction to raise the curtain 10.

The outer end of the rod 33 is provided with a fiat sided projection 35 adapted to be disposed in a flat sided notchr36 in a hired support 37 secured in any well known manner to a'window frame. r The bearing 31 has a key way or notch 38 extending lengthwisethereof in which a pin 39 is adapted to be disposed when the spring has been wound snficiently to raise the curtain 10. v c

When the cylindrical projection 24 has been inserted into the socket 23 the flatsided projection 35 must be inserted into the notch 36 while the roller 11 is-held from turning. This insertion can only be accomplished pin 39 from the key way 38 so that the spring 34 willbe in condition to act when itis desired to raise the curtain 10.

The upper end of the support 37 hares outwardly as at 40 so that when the flat sided projection 35 is being inserted into the notch 36 the shoulder 41 on the rod 33 will engage the facevof the support and as it is moved downwardly over the flaring surface the rod 33 will be forced inwardly against the tension of the spring 34.

The friction between the that spring 21 and the periphery of the ratchet 17 is sufcurtain 10 and raises the 'weighted'stick, the tension of the spring 34 will then raise the ficientto counterbalance the weight of the stick r12;

- Ifthe operator graspsthe lower endof the curtain as soon as it is relieved of the weight of said stick, and consequently the roller Wlll be slowly rotated and the curtain raised.

lVhen the operator releases his hold upon the curtain the weight of the stick 12 will be sufficient to retain the curtain at any desired point, the friction on the ratchet 17 counteracting the weight of the stick to such an extent that when the stick is released the curtain will remain at that point.

By this means the curtain may be stopped at any desiredpoint and it is impossible for the spring 34 to cause the roller to race and impart a sudden raising of the curtain beyond the point where it is desired to have 1t rest. f

It is believed that the operation and many advantages-of the invention will be fully understood without further description.

Having thus described my invention, I clai m v 1. In combination with a curtain roller provided at one end'with means for imparting rotation to said roller, and raising the curtain and having a weight overbalancing the tension of the raising means, means 00- acting with the opposite end of the roller for means for imparting rotation thereto and.

having a pawl'extending'from the opposite end thereof; a rotatableratchet with which said pawl coacts mounted upon one of said brackets; and a retardingmember'coacting with theperiphery ofsaid ratchet.

31 In combination with a curtain roller provided at one end with means for imparting rotation thereto andhaving a pawl extending from the'oppositeend thereof; a. fixed support; a ratchetrevolubly mounted upon said support and with which said pawl coacts;-'and means moi'inted on said bracket and coacting with the 'periphery of said ratchet for retarding the rotation of said ratchet when the curtain is being lowered.

\ 4. In combination with "a curtain roller provided at one end with means for imparting rotation thereto and having a pawl extending from the opposite end thereof; a fixed support; a ratchet revolubly mounted upon saidsupportand withwhich said pawl coacts; and frictional means mounted on said bracket and coacting with the periphery of said ratchet for retarding therotation of said ratchet when the curtain is "being lowered, f

5. In combination with a curtain roller provided at one end with meanslfor impart- 7 ing rotation thereto and having a pawl excred and coacting with the flange of said l recap ratchet to retain said ratchet on said support. 6. In combination with a curtain roller provided at one end with means for imparting rotation thereto and having a pawl extending from the opposite end thereof; a fixed support provided with a pintle alined with the axis of said roller; a ratchet revoluble upon saidpintle and having a flange at provided at one end with means for imparting rotation thereto and having a pawl extending from the opposite end thereof; a fixed support provided with a pintle alined with the axis ofsaid roller; a ratchet revo- V luble upon said pintle and having a flange at abutting said flange.

its inner end; twostuds extending laterally from said support and having notches in the peripheries thereof; and a flat spring having extensions at its opposite ends positioned in said notchesy'the central portion of said spring being in frictional engagement with the periphery of said ratchet with one edge .8. In combination with a curtain roller provided at one end with means for impart- I ing rotation thereto and having a spring,

pressed pawl extending from the opposite end thereof; a ratchet with which said pawl coacts during the lowering of the curtain to 1 7 impart'rotation to said ratchet; and aretarding member coacting with said ratchet,

Signed by me at 746 Old South Bldg, Boston, Mass this 18th day of March, 1927.

ALVIN P. LANDRY. 

